com.facebook.presto.spi.block

Class VariableWidthBlockBuilder

java.lang.Object

com.facebook.presto.spi.block.AbstractVariableWidthBlock

com.facebook.presto.spi.block.VariableWidthBlockBuilder

All Implemented Interfaces:

Block, BlockBuilder

public class VariableWidthBlockBuilder
extends AbstractVariableWidthBlock
implements BlockBuilder

Constructor Summary

Constructors

Constructor and Description
VariableWidthBlockBuilder(BlockBuilderStatus blockBuilderStatus)

Method Summary

Methods

Modifier and Type	Method and Description
BlockBuilder	appendNull() Appends a null value to the block.
Block	build() Builds the block.
BlockBuilder	closeEntry() Write a byte to the current entry;
int	getLength(int position) Gets the length of the value at the position.
int	getPositionCount() Returns the number of positions in this block.
protected int	getPositionOffset(int position)
protected io.airlift.slice.Slice	getRawSlice(int position)
Block	getRegion(int positionOffset, int length) Returns a block starting at the specified position and extends for the specified length.
int	getSizeInBytes() Returns the size of this block in memory.
boolean	isEmpty() Have any values been added to the block?
protected boolean	isEntryNull(int position)
boolean	isFull() Is this block full? If true no more values should be added to the block.
String	toString()
BlockBuilder	writeByte(int value) Write a byte to the current entry;
BlockBuilder	writeBytes(io.airlift.slice.Slice source, int sourceIndex, int length) Write a byte sequences to the current entry;
BlockBuilder	writeDouble(double value) Write a double to the current entry;
BlockBuilder	writeFloat(float value) Write a float to the current entry;
BlockBuilder	writeInt(int value) Write a int to the current entry;
BlockBuilder	writeLong(long value) Write a long to the current entry;
BlockBuilder	writeShort(int value) Write a short to the current entry;

Methods inherited from class com.facebook.presto.spi.block.AbstractVariableWidthBlock

assureLoaded, bytesCompare, bytesEqual, compareTo, equals, getByte, getDouble, getEncoding, getFloat, getInt, getLong, getShort, getSingleValueBlock, getSlice, hash, isNull, writeBytesTo

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.facebook.presto.spi.block.Block

assureLoaded, bytesCompare, bytesEqual, compareTo, equals, getByte, getDouble, getEncoding, getFloat, getInt, getLong, getShort, getSingleValueBlock, getSlice, hash, isNull, writeBytesTo

Constructor Detail

VariableWidthBlockBuilder

public VariableWidthBlockBuilder(BlockBuilderStatus blockBuilderStatus)

Method Detail

getPositionOffset

protected int getPositionOffset(int position)

Specified by:

getPositionOffset in class AbstractVariableWidthBlock

getLength

public int getLength(int position)

Description copied from interface: Block

Gets the length of the value at the position.

Specified by:

getLength in interface Block

getRawSlice

protected io.airlift.slice.Slice getRawSlice(int position)

Specified by:

getRawSlice in class AbstractVariableWidthBlock

getPositionCount

public int getPositionCount()

Description copied from interface: Block

Returns the number of positions in this block.

Specified by:

getPositionCount in interface Block

isEmpty

public boolean isEmpty()

Description copied from interface: BlockBuilder

Have any values been added to the block?

Specified by:

isEmpty in interface BlockBuilder

isFull

public boolean isFull()

Description copied from interface: BlockBuilder

Is this block full? If true no more values should be added to the block.

Specified by:

isFull in interface BlockBuilder

getSizeInBytes

public int getSizeInBytes()

Description copied from interface: Block

Returns the size of this block in memory.

Specified by:

getSizeInBytes in interface Block

writeByte

public BlockBuilder writeByte(int value)

Description copied from interface: BlockBuilder

Write a byte to the current entry;

Specified by:

writeByte in interface BlockBuilder

writeShort

public BlockBuilder writeShort(int value)

Description copied from interface: BlockBuilder

Write a short to the current entry;

Specified by:

writeShort in interface BlockBuilder

writeInt

public BlockBuilder writeInt(int value)

Description copied from interface: BlockBuilder

Write a int to the current entry;

Specified by:

writeInt in interface BlockBuilder

writeLong

public BlockBuilder writeLong(long value)

Description copied from interface: BlockBuilder

Write a long to the current entry;

Specified by:

writeLong in interface BlockBuilder

writeFloat

public BlockBuilder writeFloat(float value)

Description copied from interface: BlockBuilder

Write a float to the current entry;

Specified by:

writeFloat in interface BlockBuilder

writeDouble

public BlockBuilder writeDouble(double value)

Description copied from interface: BlockBuilder

Write a double to the current entry;

Specified by:

writeDouble in interface BlockBuilder

writeBytes

public BlockBuilder writeBytes(io.airlift.slice.Slice source,
                      int sourceIndex,
                      int length)

Description copied from interface: BlockBuilder

Write a byte sequences to the current entry;

Specified by:

writeBytes in interface BlockBuilder

closeEntry

public BlockBuilder closeEntry()

Description copied from interface: BlockBuilder

Write a byte to the current entry;

Specified by:

closeEntry in interface BlockBuilder

appendNull

public BlockBuilder appendNull()

Description copied from interface: BlockBuilder

Appends a null value to the block.

Specified by:

appendNull in interface BlockBuilder

isEntryNull

protected boolean isEntryNull(int position)

Specified by:

isEntryNull in class AbstractVariableWidthBlock

getRegion

public Block getRegion(int positionOffset,
              int length)

Description copied from interface: Block

Returns a block starting at the specified position and extends for the specified length. The specified region must be entirely contained within this block. The region can be a view over this block. If this block is released the region block may also be released. If the region block is released this block may also be released.

Specified by:

getRegion in interface Block

build

public Block build()

Description copied from interface: BlockBuilder

Builds the block. This method can be called multiple times.

Specified by:

build in interface BlockBuilder

toString

public String toString()

Overrides:

toString in class Object